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22 lines
583 B
C++
22 lines
583 B
C++
#include <nx/XciUtils.h>
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void nx::XciUtils::getXciHeaderAesIv(const nx::sXciHeader* hdr, byte_t* iv)
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{
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for (size_t i = 0; i < 16; i++)
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{
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iv[15-i] = hdr->aescbc_iv.iv[i];
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}
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}
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void nx::XciUtils::decryptXciHeader(const byte_t* src, byte_t* dst, const byte_t* key)
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{
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byte_t iv[crypto::aes::kAesBlockSize];
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getXciHeaderAesIv((const nx::sXciHeader*)src, iv);
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// copy plain
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memcpy(dst, src, nx::xci::kHeaderEncOffset);
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// decrypt encrypted data
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crypto::aes::AesCbcDecrypt(src + nx::xci::kHeaderEncOffset, nx::xci::kHeaderEncSize, key, iv, dst + nx::xci::kHeaderEncOffset);
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} |